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Texas Instruments REF3125AIDBZRG4 — Analog & Data Acquisition

REF3125AIDBZRG4 2.5V Voltage Reference, ±0.2%, SOT-23-3

MPNREF3125AIDBZRG4
End of Life

Texas Instruments REF3125AIDBZRG4 series voltage reference, fixed 2.5V output, ±0.2% tolerance, 20ppm/°C drift, 10 mA output, SOT-23-3, -40°C to 125°C.

$1.4200Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

REF3125AIDBZRG4 specifications
ParameterValue
Output typeFixed
MountingSurface Mount
Reference typeSeries
Voltage - input2.55V ~ 5.5V
Voltage - output (Min (Fixed))2.5V
Output current10 mA
Current - supply135µA
Operating temperature-40°C~125°C(TA)
PackageTape & Reel (TR)
Tolerance±0.2%
CaseTO-236-3, SC-59, SOT-23-3
Noise - 0.1Hz to 10Hz33µVp-p
Noise - 10Hz to 10kHz48µVrms
Temperature coefficient20ppm/°C

Product details

Temperature drift and noise floor

Low-frequency noise is specified at 33 µVp-p (0.1 Hz to 10 Hz) and 48 µVrms (10 Hz to 10 kHz), which keeps the reference clean for a 12-bit or 14-bit SAR ADC.

SOT-23-3 package — rework-friendly footprint

Housed in a three-lead SOT-23-3 (also known as TO-236-3 / SC-59), the part is small enough for tight layouts but still hand-reworkable with a hot-air station. The low thermal mass means it reaches reflow temperature quickly — no risk of lifting a pad if the profile is reasonable.

Frequently asked questions

What is the REF3125AIDBZRG4 tolerance?

The initial output voltage tolerance is ±0.2% at 25°C.

Can REF3125AIDBZRG4 replace REF3125AIDBZT?

The REF3125AIDBZT is the same die in a different reel/tube packaging variant. The electrical specs — 2.5 V output, ±0.2% tolerance, 20 ppm/°C drift — are identical. The 'RG4' suffix indicates Tape & Reel packaging; the 'T' suffix typically indicates a smaller reel or tube. Functionally they are interchangeable on the board.